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3, 15, 55, 173, 511, 1451, 4019, 10937, 29371, 78055, 205679, 538149, 1399607, 3621315, 9327723, 23931633, 61186163, 155949119, 396369831, 1004904733, 2541896559, 6416348251, 16165611043, 40657256617, 102090514731, 255968753175, 640899345631, 1602640560533
(列表;图表;参考;听;历史;文本;内部格式)
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